Journey into the subatomic world through 42 interactive demonstrations. Meet the 17 fundamental particles, build Feynman diagrams, watch symmetry break on a 3D Mexican hat potential, trace color charge flux tubes, and hunt for the Higgs boson in simulated collider events.
See also: Representation Theory for the irreducible representations behind every Standard Model particle, Lie Groups for the SU(3) × SU(2) × U(1) gauge symmetries, and Quantum Mechanics for the quantum field theory foundations.
Meet all 17 fundamental particles of the Standard Model in an interactive 3D gallery
Build and animate Feynman diagrams with a drag-and-drop editor
Compare the four fundamental forces and see how carriers mediate interactions
Explore the Mexican hat potential and how particles acquire mass
Virtual photon exchange, running coupling, and loop diagrams
RGB color charge, gluon exchange, confinement, and asymptotic freedom
W/Z boson exchange, the CKM matrix, and neutrino oscillations
GPU-accelerated collision events, detector displays, and resonance hunting
Check quantum numbers, solve reaction puzzles, and balance particle equations
Freeform Feynman diagram sandbox, parameter tuning, and physics challenges